This standard specifies the types, dimensions and technical conditions of ball thread broaching taps before grinding. This standard applies to pre-grinding ball thread broaching taps (hereinafter referred to as taps). This type of tap is usually used for thread drawing of through-hole ball internal threads on ductile metals before thread grinding.
JB/T 10871-2008 history
2008JB/T 10871-2008 Broaching taps for pre-grinding ball screw threads